Properties of Eos Cobalt Chrome (Co-Cr) SP2

CobaltChrome alloy (Co-Cr) is known for its physical properties which give great advantages compared to other alloys. Co-Cr alloys tend to be resistant to corrosion, exhibit high elasticity and are important factors for prosthetic work, reducing complications in surrounding tissues, minimizing irritation, and the possibility of allergic reaction, with Co-Cr Is biocompatible (acceptable) with blood and surrounding tissues.

In all countries of the world where there is a working standard and protocol for dental prosthetics, a nickel-based alloy (Ni) must not be used while in our market it is still present. It has been established that over 90% of cases of possible allergies are caused by Nickel (Ni) which, compared to Co-Cr, has low biocompatibility in the human body and nickel-derived ions exhibit high toxicity that exhibits irritation Of the gingiva.

Physico-chemical properties of Eos Cobalt Chrome (Co-Cr) SP2

Material composition Relative density Approx 100%
CO: 63.8 wt-% Density 8.5 g/cm3
Cr: 24.7 wt-% Proof strength (Rp 0.2%) 850 MPa
Mo: 5.1 wt-% Ultimate tensile strength 1350 MPa
W: 5.4 wt-% Percent elongation 3%
Si: 1.0 wt-% Young’s Modulus Approx. 200GPa
Fe: max. 0.50 wt-% Vickers hardness HV10 420 HV
Mn: max. 0.10 wt-% Coefficient of thermal expansion (25-500 C) 14.3 x 10E-6 m/m C
Coefficient of thermal expansion (20-600 C) 14.5 x 10E-6 m/m C
Melting interval 1410 - 1450 C

*Free of Ni, Be and Cd according to ISO 22674

Direct Metal Laser Sintering (DMLS)

The Eos M270 is the fastest, most precision and high-capacity device in the field. This system works on the basis of a multi-dimensional laser construction, joining and compressing powdered metal particles at a very high density which enables maximum strength and precision.